The effects of B2O3 addition on the sintering behavior and th microwave dielectric properties of $(Mg_{0.93}Ca_{0.07})TiO_3$ ceramics were investigated. By addition of $B_2O_3$, increases the density of the ceramics increases and grain growth enhances, It was densified to over 94% of $(Mg_{0.93}Ca_{0.07})TiO_3$ theoretical density by the addition of 0.15-1.0wt% B2O3 and stable microwave dielectric properties observed by the addition of 0.2-0.4wt% $B_2O_3.;(Mg_{0.93}Ca_{0.07})TiO_3$ ceramics sintered at $1200^{circ}C$ exhibits maximum dielectric constants of 24-25 quality factor($Q{ imes}f$) of more than 70000 and temperature coefficient of resonant frequency of $0;ppm/^{circ}C$ by adding of 0.15-0.4wt% $B_2O_3$.